so the lower the number the more efficient it is?

 

Yup.

 

Ok so I have heard 2ohm stable for an amp.What makes it 2ohm stable?

 

I like Navy's sub upgrade, also Captain's uprades as well!

My question being... any quality/sound diff between those two subs? (Kicker & Autobahn) and price difference?

 

It looks to me that you replaced just the speak, but the Amp is still the same? Is that correct?

 

No, - he said he has an Orion amp.

Let's see some pics of the amp install...where's it located?

 

Most car audio is designed for 4 ohm speakers, so that is what most manfacturers design car audio components around. But higher end audio goes for the maximum effeciency to effectively double an amps output (50W@4ohm = 100W@2ohm - is that right, somebody in audio correct me if I'm wrong). Keep in mind that 0 ohms is a dead short. As you get close to 0 ohms your components have to have tight enough tolerances to not see it as a short and overheat. So if your amp is 2 ohm stable, it will work with setups that present a 2 ohm load.

This may be oversimplified, but you should get the idea.

 

Right. The speaker will disperse the most energy if the speaker’s impedance (with respect to the speaker wires) matches the output impendence of the amplifier. Efficiency is achieved by matching the speaker’s impedance to the amplifier's output impedance. All amplifiers are designed with a optimal output impedance and that is the impedance you want to set your speakers at.

The 50w@4 ohms and 100w@2 ohms is correct as long as the amplifier is designed to produce the voltage and current need to push the signal into the speaker load. Check your amplifier's specifications, it should show the load and power ratings it is designed to operate at.

Speakers are rated at a nominal (or average) resistance because they do not offer a constant resistance value.

When working with AC as we are with audio signals, we must consider the effective values of the voltage and the current often referred to as the RMS values. The analog to Ohm’s laws is I = V/Z where I is current, V is voltage and Z is impedance.

Just to be politically correct, resistance is the opposition of direct current (DC) flow and impedance is the opposition of alternating current (AC) flow.

 

Hey Navy, did you tear apart the stock sub-box? And are you getting any rattling outside the vehicle? This is something I would like to do later on when I upgrade my HHR stereo.

Ng

 

Awwwww man! Just go for broke:



I have plenty of nice deeeep bass now!